52 PROCEEDINGS OF THE NATIONAL MUSEUM vol.79 



female, its length equal to length of pedicel, Fl, and base of F2 

 combined, pedicel and Fl equal in length, latter one-sixth longer than 

 F2, F2 to F4 uniform in length and diameter, each one-fourth 

 longer than its maximum diameter, club compact, three times as long 

 as its greatest thickness, as long as F4, F3, and a fourth of F2 

 combined. 



Type locality. — Lequille, Nova Scotia, Canada. 



Type. — Female, Canadian National Museum No. 3102. 



Paratypes. — Female and male, U.S.N.M. No. 42238. 



The type, the allotype, and 1 female and 2 male paratypes were 

 reared by Prof. G. E. Saunders from the galls of Neuroterus 

 hatatus (Fitch) on April 2, 1911, from the type locality; 1 female 

 and 3 male paratypes from the same host by H. S. Payne, Bear 

 River, April 3, 1911; and 1 of each sex issued April 12, 1911, at 

 Round Hill, G. E. Saunders collector, without host data, but prob- 

 ably belonging to the same lot as the above. The type and allotype 

 are in the Canadian collection, and the paratypes are divided 

 among the collections of that institution, the United States National 

 Museum, and the writer. 



Remarks. — Later I find in the National Museum 17 females and 



11 males that are probably this species. The range in length and 

 color is greater in this lot than in the smaller type series. The 

 average color pattern agrees quite closely with that of the types^ 

 and the size varies from 2.6 to 4.3 mm., or an average of 3.5 mm. 

 The number of setae on the submarginal vein is from 13 on the 

 smaller and more yellow individuals to 17 on the larger and darker 

 specimens. The best evidence, however, that they are novascotiae 

 is the form of the head. A series of measurements shows it to be 

 three-fifths as long as broad, and about equally long over its entire 

 width, quite blocky in form, which is a rather distinct feature in 

 this species. The submarginal band is broad on the basal half and 

 tapers usually to a sharp tip, and at the same time bends toward 

 the base of the wing as in some other species. The present series 

 (Quaintance No. 1730) was reared by R. A. Cushman between May 



12 and June 1, 1911, at Vienna, Va., from the galls of GallirKytis 

 cornigera (Osten Sacken). Kinsey * states that these occur on black 

 oaks in the Eastern United States. 



19. DECATOMA FLAVIPES. new species 



Resembles D. ■flamminneiventris Girault in size, dimensions, and 

 form of the head, numerical range of hairs on the submarginal vein, 

 unsculptured abdomen, in having the sides of the body yellow, and 



8 Indiana Univ. Studies No. 53. vol. 9, p. 105. 1922. 



